Cometic Nissan RB-25 6 CYL 86mm .051 MLS Head Gasket — Performance

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SKU: CGSC4317-051
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Sale price$180.99 Regular price$201.10
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Ultimate Sealing for Nissan RB25 Engines

The Cometic 86mm .051 inch MLS Head Gasket is the premier choice for Nissan RB25 engine builders looking for reliability under high-boost conditions. This multi-layer steel gasket is specifically engineered to handle the thermal and mechanical stresses of high-performance forced induction, ensuring your combustion chamber remains perfectly sealed.

Engineered for High-Output Builds

  • Multi-Layer Steel: Multiple layers of stainless steel provide exceptional strength and resilience.
  • Viton Coated: Outer layers are embossed and coated with Viton to create a robust micro-seal against uneven surfaces.
  • Heat Resistance: Withstands temperatures up to 482°F (250°C), perfect for high-boost RB25 builds.
  • Precision Fit: Designed specifically for the 86mm bore of the RB25 series.

Cometic MLS gaskets are famous for their ability to rebound and maintain a seal even as the engine block and head expand at different rates. Because they require no additional sealants, installation is clean and straightforward. Whether you are building a street-driven RB25 or a dedicated drift or drag machine, this gasket provides the structural integrity needed to prevent head gasket failure. The stainless steel construction also offers superior corrosion resistance, making it an excellent choice for engines that see long-term use. Secure your engine's future with the best sealing technology from Cometic at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Ultimate Sealing for Nissan RB25 Engines

The Cometic 86mm .051 inch MLS Head Gasket is the premier choice for Nissan RB25 engine builders looking for reliability under high-boost conditions. This multi-layer steel gasket is specifically engineered to handle the thermal and mechanical stresses of high-performance forced induction, ensuring your combustion chamber remains perfectly sealed.

Engineered for High-Output Builds

  • Multi-Layer Steel: Multiple layers of stainless steel provide exceptional strength and resilience.
  • Viton Coated: Outer layers are embossed and coated with Viton to create a robust micro-seal against uneven surfaces.
  • Heat Resistance: Withstands temperatures up to 482°F (250°C), perfect for high-boost RB25 builds.
  • Precision Fit: Designed specifically for the 86mm bore of the RB25 series.

Cometic MLS gaskets are famous for their ability to rebound and maintain a seal even as the engine block and head expand at different rates. Because they require no additional sealants, installation is clean and straightforward. Whether you are building a street-driven RB25 or a dedicated drift or drag machine, this gasket provides the structural integrity needed to prevent head gasket failure. The stainless steel construction also offers superior corrosion resistance, making it an excellent choice for engines that see long-term use. Secure your engine's future with the best sealing technology from Cometic at GGCRACING.

Product Details

Product Description

About Cometic Gasket

Cometic Gasket is the world leader in custom multi-layer steel head gaskets for performance and motorsport engines. From off-the-shelf MLS for popular platforms to bespoke gaskets for race-only builds, Cometic seals everything from Honda B-series to LSX.

Ultimate Sealing for Nissan RB25 Engines

The Cometic 86mm .051 inch MLS Head Gasket is the premier choice for Nissan RB25 engine builders looking for reliability under high-boost conditions. This multi-layer steel gasket is specifically engineered to handle the thermal and mechanical stresses of high-performance forced induction, ensuring your combustion chamber remains perfectly sealed.

Engineered for High-Output Builds

  • Multi-Layer Steel: Multiple layers of stainless steel provide exceptional strength and resilience.
  • Viton Coated: Outer layers are embossed and coated with Viton to create a robust micro-seal against uneven surfaces.
  • Heat Resistance: Withstands temperatures up to 482°F (250°C), perfect for high-boost RB25 builds.
  • Precision Fit: Designed specifically for the 86mm bore of the RB25 series.

Cometic MLS gaskets are famous for their ability to rebound and maintain a seal even as the engine block and head expand at different rates. Because they require no additional sealants, installation is clean and straightforward. Whether you are building a street-driven RB25 or a dedicated drift or drag machine, this gasket provides the structural integrity needed to prevent head gasket failure. The stainless steel construction also offers superior corrosion resistance, making it an excellent choice for engines that see long-term use. Secure your engine's future with the best sealing technology from Cometic at GGCRACING.

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